diff --git a/webui/src/components/Editor.tsx b/webui/src/components/Editor.tsx
index 1399b96..2566079 100644
--- a/webui/src/components/Editor.tsx
+++ b/webui/src/components/Editor.tsx
@@ -47,10 +47,11 @@ interface EditorProps {
 	initialValue?: string;
 	onChange?: (editor: any, changes: any) => void;
 	onReady?: (editor: any) => void;
+	fontSize?: number;
 }
 
 export const Editor = forwardRef<any, EditorProps>(function Editor(
-	{ initialValue = "", onChange, onReady },
+	{ initialValue = "", onChange, onReady, fontSize = 14 },
 	ref
 ) {
 	const textareaRef = useRef<HTMLTextAreaElement>(null);
@@ -113,6 +114,17 @@ export const Editor = forwardRef<any, EditorProps>(function Editor(
 		};
 	}, []); // DO NOT FILL ARRAY
 
+	// Update font size when it changes
+	useEffect(() => {
+		if (editorRef.current) {
+			const wrapper = editorRef.current.getWrapperElement();
+			if (wrapper) {
+				wrapper.style.fontSize = `${fontSize}px`;
+				editorRef.current.refresh();
+			}
+		}
+	}, [fontSize]);
+
 	return (
 		<div className={styles.editorContainer}>
 			<textarea
diff --git a/webui/src/components/Playground.tsx b/webui/src/components/Playground.tsx
index f441866..2051a14 100644
--- a/webui/src/components/Playground.tsx
+++ b/webui/src/components/Playground.tsx
@@ -3,6 +3,7 @@
 import { useState, useRef, useCallback, useEffect } from "react";
 import { Button } from "@/components/ui/Button";
 import { Dropdown } from "@/components/ui/Dropdown";
+import { Slider } from "@/components/ui/Slider";
 import { Editor } from "@/components/Editor";
 import { Terminal, TerminalRef } from "@/components/Terminal";
 import {
@@ -46,6 +47,7 @@ const exampleScriptList = [
 export default function Playground() {
 	const [isScriptRunning, setIsScriptRunning] = useState(false);
 	const [isEditorReady, setIsEditorReady] = useState(false);
+	const [fontSize, setFontSize] = useState(14);
 
 	const editorRef = useRef<any>(null);
 	const resultRef = useRef<HTMLTextAreaElement>(null);
@@ -191,6 +193,24 @@ export default function Playground() {
 							}))}
 						/>
 
+						<Dropdown
+							trigger="Config"
+							align="right"
+							customContent={
+								<div className={styles.configPanel}>
+									<Slider
+										label="Font Size"
+										value={fontSize}
+										min={10}
+										max={24}
+										step={1}
+										onChange={setFontSize}
+										unit="px"
+									/>
+								</div>
+							}
+						/>
+
 						<Dropdown
 							triggerIcon="help-circle"
 							align="right"
@@ -246,6 +266,7 @@ export default function Playground() {
 						initialValue={initialCode}
 						onChange={() => {}}
 						onReady={() => setIsEditorReady(true)}
+						fontSize={fontSize}
 					/>
 				</div>
 				<div className={styles.rightPanel}>
@@ -255,6 +276,7 @@ export default function Playground() {
 							<Terminal
 								ref={terminalRef}
 								onData={sendDataToScript}
+								fontSize={fontSize}
 							/>
 						</div>
 					</div>
@@ -266,6 +288,7 @@ export default function Playground() {
 							readOnly
 							autoComplete="off"
 							placeholder="Use print() to produce output"
+							style={{ fontSize: `${fontSize}px` }}
 						/>
 					</div>
 				</div>
diff --git a/webui/src/components/Terminal.tsx b/webui/src/components/Terminal.tsx
index 31015b8..4d8468a 100644
--- a/webui/src/components/Terminal.tsx
+++ b/webui/src/components/Terminal.tsx
@@ -19,6 +19,7 @@ export const Terminal = forwardRef<
 	TerminalRef,
 	{
 		onData: (data: String) => void;
+		fontSize?: number;
 	}
 >(function Terminal(props, ref) {
 	const terminalRef = useRef<HTMLDivElement>(null);
@@ -54,7 +55,7 @@ export const Terminal = forwardRef<
 		// - `init_term()` ccompletes, and we attempt to set `xtermRef.current`, causing issues
 		let mounted = true;
 
-		init_term(terminalRef, props.onData, () => mounted)
+		init_term(terminalRef, props.onData, () => mounted, props.fontSize)
 			.then((term) => {
 				if (!mounted) return;
 				xtermRef.current = term;
@@ -70,7 +71,14 @@ export const Terminal = forwardRef<
 				xtermRef.current = null;
 			}
 		};
-	}, [props.onData]);
+	}, [props.onData, props.fontSize]);
+
+	// Update font size when it changes
+	useEffect(() => {
+		if (xtermRef.current && props.fontSize !== undefined) {
+			xtermRef.current.options.fontSize = props.fontSize;
+		}
+	}, [props.fontSize]);
 
 	return <div ref={terminalRef} style={{ height: "100%", width: "100%" }} />;
 });
@@ -80,7 +88,8 @@ async function init_term(
 
 	// Called when the terminal receives data
 	onData: (data: String) => void,
-	isMounted: () => boolean
+	isMounted: () => boolean,
+	fontSize?: number
 ) {
 	if (!ref.current) return;
 
@@ -90,7 +99,7 @@ async function init_term(
 	const term = new Terminal({
 		//"fontFamily": "Fantasque",
 		rows: 30,
-		fontSize: 18,
+		fontSize: fontSize ?? 18,
 		tabStopWidth: 4,
 		cursorBlink: false,
 		cursorStyle: "block",
diff --git a/webui/src/components/ui/Slider.tsx b/webui/src/components/ui/Slider.tsx
new file mode 100644
index 0000000..1228e80
--- /dev/null
+++ b/webui/src/components/ui/Slider.tsx
@@ -0,0 +1,49 @@
+"use client";
+
+import { ChangeEvent } from "react";
+import styles from "@/styles/Slider.module.css";
+
+interface SliderProps {
+	label: string;
+	value: number;
+	min: number;
+	max: number;
+	step?: number;
+	onChange: (value: number) => void;
+	unit?: string;
+}
+
+export function Slider({
+	label,
+	value,
+	min,
+	max,
+	step = 1,
+	onChange,
+	unit = "",
+}: SliderProps) {
+	const handleChange = (e: ChangeEvent<HTMLInputElement>) => {
+		onChange(Number(e.target.value));
+	};
+
+	return (
+		<div className={styles.sliderContainer}>
+			<div className={styles.sliderLabel}>
+				<span>{label}</span>
+				<span className={styles.sliderValue}>
+					{value}
+					{unit}
+				</span>
+			</div>
+			<input
+				type="range"
+				min={min}
+				max={max}
+				step={step}
+				value={value}
+				onChange={handleChange}
+				className={styles.slider}
+			/>
+		</div>
+	);
+}
\ No newline at end of file
diff --git a/webui/src/styles/Slider.module.css b/webui/src/styles/Slider.module.css
new file mode 100644
index 0000000..ff3230c
--- /dev/null
+++ b/webui/src/styles/Slider.module.css
@@ -0,0 +1,57 @@
+.sliderContainer {
+	display: flex;
+	flex-direction: column;
+	gap: 8px;
+}
+
+.sliderLabel {
+	display: flex;
+	justify-content: space-between;
+	align-items: center;
+	font-size: 13px;
+	color: #cccccc;
+}
+
+.sliderValue {
+	font-weight: 600;
+	color: #e0e0e0;
+}
+
+.slider {
+	width: 100%;
+	height: 6px;
+	border-radius: 3px;
+	background: #3a3a3a;
+	outline: none;
+	-webkit-appearance: none;
+	appearance: none;
+}
+
+.slider::-webkit-slider-thumb {
+	-webkit-appearance: none;
+	appearance: none;
+	width: 16px;
+	height: 16px;
+	border-radius: 50%;
+	background: #4fc3f7;
+	cursor: pointer;
+	transition: background 0.15s ease;
+}
+
+.slider::-webkit-slider-thumb:hover {
+	background: #6dd1ff;
+}
+
+.slider::-moz-range-thumb {
+	width: 16px;
+	height: 16px;
+	border: none;
+	border-radius: 50%;
+	background: #4fc3f7;
+	cursor: pointer;
+	transition: background 0.15s ease;
+}
+
+.slider::-moz-range-thumb:hover {
+	background: #6dd1ff;
+}
\ No newline at end of file